Electrical Installations

LR 10.1(a) The requirements of this Chapter are additional to those of Pt 6, Ch 2 Electrical Engineering of the Rules for Ships.

LR 10.1(b) In cases where LR is authorised to issue the relevant statutory certificates, and is required to do so, the requirements of this Chapter, including LR's interpretations where relevant and the requirements of Pt 6, Ch 2 Electrical Engineering of the Rules for Ships will be applied together with any amendment or interpretation adopted by the appropriate National Authority.

10.1.1 The provisions of this chapter are applicable to ships carrying cargoes which are inherently, or due to their reaction with other substances, flammable or corrosive to the electrical equipment, and shall be applied in conjunction with applicable electrical requirements of Part D - Electrical installations of chapter II-1 of SOLAS.

10.1.2.1 Electrical installations shall be such as to minimize the risk of fire and explosion from flammable products^footnote.

LR 10.1(c) Where electrical equipment is to be of a 'safe type' in order to comply with IEC 60092 : Electrical installations in ships - Part 502: Tankers - Special features, such equipment is to be certified for the gases/vapours involved. The construction and type testing is to be in accordance with IEC Publication 60079: , Electrical Apparatus for Explosive Gas Atmospheres, or an equivalent National Standard.

10.1.2.2 Where the specific cargo is liable to damage the materials normally used in electrical apparatus, due consideration shall be given to the particular characteristics of the materials chosen for conductors, insulation, metal parts, etc. As far as necessary, these components shall be protected to prevent contact with gases or vapours liable to be encountered.

10.1.3 The Administration shall take appropriate steps to ensure uniformity in the implementation and the application of the provisions of this chapter in respect of electrical installations.

10.1.4 Electrical equipment, cables and wiring shall not be installed in the hazardous locations unless it conforms with the standards not inferior to those acceptable to the Organization^footnote. However, for locations not covered by such standards, electrical equipment, cables and wiring which do not conform to the standards may be installed in hazardous locations based on a risk assessment to the satisfaction of the Administration, to ensure that an equivalent level of safety is assured.

LR 10.1(d) Absence of information on temperature class and apparatus group in column i in the Table of Chapter 17 means that data are not currently available, and this should not be confused with the non-flammable (NF) notation describing some substances. For those cargoes where there is absence of information on temperature class and apparatus group in Chapter 17, this information is to be submitted where carriage is contemplated.

10.1.5 Where electrical equipment is installed in hazardous locations, as permitted in this chapter, it shall be to the satisfaction of the Administration and certified by the relevant authorities recognized by the Administration for operation in the flammable atmosphere concerned, as indicated in column i in the table of chapter 17.

10.1.6 For guidance, indication is given if the flashpoint of a substance is in excess of 60°C. In the case of a heated cargo, carriage conditions might need to be established and the requirements for cargoes having a flashpoint not exceeding 60°C applied.

LR 10.1(e) The emergency source of electrical power is also to remain operable under the conditions described in Ch 1, 2.9 Survival requirements Survival requirements.